Modification of calcium-rich biochar by loading Si/Mn binary oxide after NaOH activation and its adsorption mechanisms for removal of Cu(II) from aqueous solution

Juan Liu,Xiaoyu Yang,Honghao Liu, Wanyi Cheng,Yongchao Bao

Colloids and Surfaces A: Physicochemical and Engineering Aspects（2020）

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Abstract

•Calcium-rich biochar was modified by Si/Mn binary oxide following NaOH activation.•NaOH activation improved the morphology and uniformity of Si/Mn oxide loading.•The novel modified calcium-rich biochar exhibits excellent adsorption capacity.•The adsorption performance and underlying mechanisms were analyzed and discussed.

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Key words

Calcium-rich biochar,NaOH activation,Si/Mn binary oxide loading,Cu(II),Adsorption mechanism

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